3 definitions found From The Collaborative International Dictionary of English v.0.48 [gcide]: fermium \fermium\ n. the transuranic element of atomic number 100; symbol Fm. The atomic weight of the most stable isotope, having a half-life of about 80 days, is 257. The first isotope, Fm255 was discovered in 1952 in the debris of a thermonuclear explosion. Other istopes have been produced in nuclear reactors and by decay of other transuranic elements. --Handb. Ch. Phys. 61. Syn: Fm. [WordNet 1.5] From WordNet (r) 2.0 [wn]: fermium n : a radioactive transuranic metallic element produced by bombarding plutonium with neutrons [syn: {Fm}, {atomic number 100}] From Elements database 20001107 [elements]: fermium Symbol: Fm Atomic number: 100 Atomic weight: (253) Radioactive metallic transuranic element, belongs to the actinoids. Ten known isotopes, most stable is Fm-257 with a half-life of 10 days. First identified by Albert Ghiorso and associates in the debris of the first hydrogen-bomb explosion in 1952.
Powered by Blog Dictionary [BlogDict]
Kindly supported by
Vaffle Invitation Code
Get a Freelance Job - Outsource Your Projects | Threadless Coupon
All rights
reserved. (2008-2024)